Yes... I agree. The advantage to the Bob is totally that foot well for the second child!
Eta: I may be biased, because I would love to have a single Bob, for many of the same reasons. We have a Bob with a fixed front wheel that dh uses to run with and he doesn't want the smaller wheel. So.... That really limits of use if that stroller to running. I use a city versa, now with a bassinet. and later the seat, which is fine for paved surfaces. I looked at buying the gt wheels, but it's already so heavy, and I wasn't sure it would be that much of an improvement. I still love my Mac quest for all short errands.
loving my dh and our littles (dd ~ 11 yrs, ds ~ 9 yrs, ds ~ 7 yrs, dd ~ 5 yrs and baby brother ~ 20 mo)